package cn.wolf.netty.heartbeat;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.handler.timeout.IdleStateEvent;

/**
 * 心跳检测 - 自定义处理器
 */
public class MyServerHandler extends ChannelInboundHandlerAdapter {

    /**
     * 处理读写空闲时间
     * @param ctx 上下文对象
     * @param evt 事件
     * @throws Exception 异常
     */
    @Override
    public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {

        if (evt instanceof IdleStateEvent) {
            //将  evt 向下转型 IdleStateEvent
            IdleStateEvent event = (IdleStateEvent) evt;
            String eventType = null;
            switch (event.state()) {
                case READER_IDLE:
                    eventType = "读空闲";
                    break;
                case WRITER_IDLE:
                    eventType = "写空闲";
                    break;
                case ALL_IDLE:
                    eventType = "读写空闲";
                    break;
            }
            System.out.println(ctx.channel().remoteAddress() + "--超时时间--" + eventType);
            System.out.println("服务器做相应处理..");
        }
    }
}
